Well first, the Sigg and reusable shopping bags are a one-time deal, right? Or are you planning of buying more in the future?
How long will your soaps/detergents last? Because that amount of soap you have listed above (like 8oz packages or larger) would easily last me and my family a few months. Well, until my 5yo started having his own little tube of "chapstick" which takes him about 2 months to decimate.
The handsoap... again, it takes us at least a month or two or three to go through each 7.5oz container of handsoap, then I have a giant tub under one of the sinks to refill the containers as they get low. Or the bars of soap we have in the shower are wahm-made, and I get two whole batches at a time (12-13 bars each batch) that last our family of 5 with semi-frequent houseguests a while. Last time I ordered some was... in May. And I think I've still got 12ish bars left.
The one that floored me on your list was grapes. Depending on where you live, they may be in season, but for $15 I sure hope you got something like 8-12lbs of grapes. Right now is root veggie time unless you live in CA or possibly even Chile (here we were getting tasty Chilean grapes back in spring). I've gotten more into the groove of trying to buy things in season. Like strawberries in June, peaches and cherries in July, apples in September/October, pears in October, asparagus in May/June, etc. Plus things taste a lot better in season as well.
So, here, it's potatoes, carrots, winter squash, onions, and so on. Of course I've gone rabid with stocking up on certain items to last us the year
(oh, like the 8-10 batches of strawberry jam I made from fresh-picked-by-me strawberries at 3 weeks post-partum), but I do have a fun-sized pantry to go wild with and I'm a sahm so the kids get to help de-stem grapes to make grape juice and crank the Squeezo and such. I seriously doubt I'd be able to do this much if I had a job outside the home.
Baking supplies... even if you don't do any canning but do cookies and baking like muffins and pancakes or biscuits or cakes and frosting from scratch, you could easily go through a 50lb bag of flour and 25lb bag of sugar in a year. Took me 3-4 months to use a 25lb bag of sugar between all the homemade goodies and canning the last little while here. I think a bigger problem would be how/where to store amounts like that - depending on the size of your house.
One note about the Organic Valley coupons - you can only print maybe 2-3 of them from a single computer using a single email address. We've gotten around that because hubby's the tech guy at his work, so every once in a while when he's there late at night fixing stuff he'll print out a few coupons on a coworker's computer. But they do have a limit.
Have you checked if there is a food co-op in your area? Also, I know this sounds strange, but for convenience foods, I have run into lots of organic stuff at Big Lots, of all places, things like fruit snacks, cereals, juices, spaghetti sauce. All at a fraction of what WF would price them at.
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